chatshield.app

What It Is

ChatShield is a Chrome extension for ChatGPT, Claude, Gemini, and GitHub Copilot Chat. It is positioned as a tool that detects sensitive data before prompts are sent to AI. It only reads the user input box on specified AI chat sites, and claims that all detection is performed locally in the browser, without sending prompts, detection results, or any data beyond settings to its servers.

Core Protection and Deployment

In terms of protection, it is closer to a lightweight DLP tool for AI usage scenarios. It uses regex patterns to detect emails, phone numbers, SSNs, addresses, credit cards, bank account patterns, AWS/OpenAI/GitHub API keys, private keys, JWTs, database connection strings, IPv4/IPv6 addresses, and more in real time. When a risk is found, it highlights the text with a red wavy underline and shows an explanation popup. Users can choose to mask the content, ignore it, or add it to a whitelist. Deployment is straightforward: it is currently mainly a Chrome extension, and Chromium-based browsers can theoretically install it from the Chrome Web Store. Firefox and Safari are still on the roadmap. Its detection engine runs locally, works offline, and is only activated on supported AI sites.

Management, Integrations, and Pricing

The free version covers common PII, credit cards, and 3 types of API keys, with basic masking and 24-hour history. Pro costs USD 6/month or USD 49/year and includes a 7-day trial with no credit card required. It adds 20+ key patterns, custom regex, smart fake-data replacement, whitelists, unlimited history, and CSV/JSON export. Team costs USD 12/user/month, requires at least 3 seats, and is billed annually. It provides an admin dashboard, team usage analytics, centralized policies, and member management; SSO/SAML is still marked as coming soon. For integrations, the product currently focuses mainly on AI chat websites and report export. We did not find information about SIEM, API, or enterprise security platform integrations.

Pros, Cons, and Who It’s For

Its strengths are clear permission boundaries, local processing, a low learning curve, and a free version that can be used without an account. It is especially suitable for developers, consultants, operations teams, and individual users who frequently paste code or business materials into AI tools. The limitations are also clear: it relies on regex matching and may not understand complex context; site coverage is limited; it cannot replace enterprise-grade DLP, CASB, or AI gateways; and information such as compliance certifications, SLA, and company location is missing. Some Team features are also still unfinished.

Access from China and Alternatives

The main materials do not provide information about access from mainland China, payment methods, or localization, so its accessibility from China can only be rated as unknown. Since it depends on the Chrome Web Store and the protected targets are mostly overseas AI chat services, actual usage may also be affected by access to browser extension stores and AI sites. If an organization needs unified auditing, compliance reporting, and end-to-end control, it should evaluate enterprise DLP, SASE/CASB, AI security gateways, or prompt-leakage prevention solutions that are available in China.